NAICS codes / 541990

NAICS 541990: All Other Professional, Scientific, and Technical Services — open federal opportunities

100+ open notices on SAM.gov. Top buyers: GENERAL SERVICES ADMINISTRATION (122), DEPT OF DEFENSE (29), NATIONAL AERONAUTICS AND SPACE ADMINISTRATION (3), POSTAL SERVICE (2).

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MDEO Reverse Industry Days

VETERANS AFFAIRS, DEPARTMENT OF · VETERANS AFFAIRS, DEPARTMENT OF · Special Notice · posted Oct 30, 2026

NAICS 541990Due Nov 12, 2026Frederick, MD

NASA NIOC Engineering Services

NATIONAL AERONAUTICS AND SPACE ADMINISTRATION · NATIONAL AERONAUTICS AND SPACE ADMINISTRATION · Special Notice · posted Oct 29, 2026

NAICS 541990Due Nov 2, 2026

Cleaning, Inspection, and Hazardous Waste Removal for Two 10,000-Gallon Oil/Water Separators

DEPT OF DEFENSE · DEPT OF THE AIR FORCE · Combined Synopsis/Solicitation · posted Oct 29, 2026

NAICS 541990Small Business (total)Due Nov 12, 2026Minneapolis, MN

Fort Campbell, KY - API 653 External Tank Inspection

DEPT OF DEFENSE · DEPT OF THE ARMY · Solicitation · posted Oct 29, 2026

NAICS 541990Service-Disabled Veteran-Owned (SDVOSB)Due Nov 13, 2026

FIRE FIGHTING EQUIPMENT INSCPECTIONS

DEPT OF DEFENSE · DEPT OF THE NAVY · Sources Sought · posted Oct 28, 2026

NAICS 541990Due Nov 2, 2026Virginia Beach, VA

SMART IRB Governance, Administration, and Operations Support (GAOS)

HEALTH AND HUMAN SERVICES, DEPARTMENT OF · NATIONAL INSTITUTES OF HEALTH · Combined Synopsis/Solicitation · posted Oct 28, 2026

NAICS 541990Due Nov 13, 2026MD

NASA NIOC Engineering Services

NATIONAL AERONAUTICS AND SPACE ADMINISTRATION · NATIONAL AERONAUTICS AND SPACE ADMINISTRATION · Special Notice · posted Oct 28, 2026

NAICS 541990Due Nov 2, 2026

Artifact Conservation Project Coordinator

NATIONAL ARCHIVES AND RECORDS ADMINISTRATION · NATIONAL ARCHIVES AND RECORDS ADMINISTRATION · Solicitation · posted Oct 28, 2026

NAICS 541990Small Business (total)Due Nov 12, 2026College Park, MD

Artifact Conservation Project Coordinator

NATIONAL ARCHIVES AND RECORDS ADMINISTRATION · NATIONAL ARCHIVES AND RECORDS ADMINISTRATION · Solicitation · posted Oct 28, 2026

NAICS 541990Small Business (total)Due Nov 12, 2026College Park, MD

711th HPW Mission Support Services MAC IDIQ

DEPT OF DEFENSE · DEPT OF THE AIR FORCE · Combined Synopsis/Solicitation · posted Oct 28, 2026

NAICS 5419908(a)Due Nov 3, 2026Wright Patterson AFB, OH

SAF/CDM Commercial Solutions Opening and Specific Calls

DEPT OF DEFENSE · DEPT OF THE AIR FORCE · Solicitation · posted Oct 28, 2026

NAICS 541990Due Oct 1, 2027

ENVIRONMENTAL MODELING AND SIMULATION SUPPORT V (EMSS-V)

DEPT OF DEFENSE · DEPT OF THE AIR FORCE · Sources Sought · posted Oct 27, 2026

NAICS 541990Due Nov 14, 2026Patrick Air Force Base, FL

National Guard Bureau (NGB) Centralized Clinical Quality Management (CQM) and Credentialing & Privileging (C&P) Services for the Air National Guard (ANG)

DEPT OF DEFENSE · DEPT OF THE ARMY · Sources Sought · posted Oct 26, 2026

NAICS 541990Due Nov 11, 2026Andrews Air Force Base, MD

Vandenberg SFB Tank Inspection

DEPT OF DEFENSE · DEPT OF THE ARMY · Combined Synopsis/Solicitation · posted Oct 26, 2026

NAICS 541990Service-Disabled Veteran-Owned (SDVOSB)Due Nov 13, 2026

Request for Information: Outreach and Industry Partnerships (OIP) Portal

HOMELAND SECURITY, DEPARTMENT OF · OFFICE OF PROCUREMENT OPERATIONS · Special Notice · posted Oct 23, 2026

NAICS 5419908(a)Due Nov 13, 2026DC

Cleaning, Inspection, and Hazardous Waste Removal for Two 10,000-Gallon Oil/Water Separators

DEPT OF DEFENSE · DEPT OF THE AIR FORCE · Combined Synopsis/Solicitation · posted Oct 23, 2026

NAICS 541990Small Business (total)Due Nov 12, 2026Minneapolis, MN

Cleaning, Inspection, and Hazardous Waste Removal for Two 10,000-Gallon Oil/Water Separators

DEPT OF DEFENSE · DEPT OF THE AIR FORCE · Combined Synopsis/Solicitation · posted Oct 23, 2026

NAICS 541990Small Business (total)Due Nov 12, 2026Minneapolis, MN

Cleaning, Inspection, and Hazardous Waste Removal for Two 10,000-Gallon Oil/Water Separators

DEPT OF DEFENSE · DEPT OF THE AIR FORCE · Combined Synopsis/Solicitation · posted Oct 23, 2026

NAICS 541990Small Business (total)Due Nov 12, 2026Minneapolis, MN

Data & AI Mission Expert Services (DAMES) IDIQ

DEPT OF DEFENSE · DEPT OF THE AIR FORCE · Sources Sought · posted Oct 23, 2026

NAICS 541990Due Nov 2, 2026Andrews AFB, MD

Cleaning, Inspection, and Hazardous Waste Removal for Two 10,000-Gallon Oil/Water Separators

DEPT OF DEFENSE · DEPT OF THE AIR FORCE · Combined Synopsis/Solicitation · posted Oct 22, 2026

NAICS 541990Small Business (total)Due Nov 12, 2026Minneapolis, MN

Data & AI Mission Expert Services (DAMES) IDIQ

DEPT OF DEFENSE · DEPT OF THE AIR FORCE · Sources Sought · posted Oct 22, 2026

NAICS 541990Due Nov 2, 2026Andrews AFB, MD

Marine Resource Technical Services Throughout the Naval Facilities Engineering Systems Command (NAVFAC) Pacific Area of Responsibility

DEPT OF DEFENSE · DEPT OF THE NAVY · Solicitation · posted Oct 22, 2026

NAICS 541990Small Business (partial)Due Nov 24, 2026

TRAINING INSTRUCTOR OPERATOR SERVICES SUPPORT II

DEPT OF DEFENSE · DEPT OF THE ARMY · Combined Synopsis/Solicitation · posted Oct 22, 2026

NAICS 541990Small Business (total)Due Nov 9, 2026FL

Fort Campbell, KY - API 653 External Tank Inspection

DEPT OF DEFENSE · DEPT OF THE ARMY · Solicitation · posted Oct 22, 2026

NAICS 541990SDVOSB sole sourceDue Nov 13, 2026

FY2027 USPS OIG Broad Agency Announcement

POSTAL SERVICE · POSTAL SERVICE · Solicitation · posted Oct 21, 2026

NAICS 541990Due Oct 1, 2027

USACE Tactical Readiness - Integrated Deployment of Enterprise Services (TRIDENT)

DEPT OF DEFENSE · DEPT OF THE ARMY · Presolicitation · posted Oct 21, 2026

NAICS 541990Small Business (total)

Water Resources Analytical and Professional Support Services - Multiple Award Task Order Contract (MATOC)

DEPT OF DEFENSE · DEPT OF THE ARMY · Sources Sought · posted Oct 20, 2026

NAICS 541990Due Nov 6, 2026

USACE Tactical Readiness - Integrated Deployment of Enterprise Services (TRIDENT)

DEPT OF DEFENSE · DEPT OF THE ARMY · Presolicitation · posted Oct 20, 2026

NAICS 541990Small Business (total)

U.S. Embassy Mexico—International Narcotics & Law Enforcement Affairs (INL Mexico) CONOCER Criminal Analyst Certification Services

STATE, DEPARTMENT OF · STATE, DEPARTMENT OF · Solicitation · posted Oct 19, 2026

NAICS 541990Due Nov 6, 2026

NASA Deep Space Autonomous Robotics Challenge: Call for Host Facility Interest

NATIONAL AERONAUTICS AND SPACE ADMINISTRATION · NATIONAL AERONAUTICS AND SPACE ADMINISTRATION · Sources Sought · posted Oct 19, 2026

NAICS 541990Due Jan 31, 2027Washington, DC

Strategic Contract Consolidation Announcement

DEPT OF DEFENSE · DEPT OF THE ARMY · Special Notice · posted Oct 19, 2026

NAICS 541990Aberdeen Proving Ground, MD

TRAINING INSTRUCTOR OPERATOR SERVICES SUPPORT II

DEPT OF DEFENSE · DEPT OF THE ARMY · Combined Synopsis/Solicitation · posted Oct 19, 2026

NAICS 541990Small Business (total)Due Nov 9, 2026FL

TRAINING INSTRUCTOR OPERATOR SERVICES SUPPORT II

DEPT OF DEFENSE · DEPT OF THE ARMY · Combined Synopsis/Solicitation · posted Oct 19, 2026

NAICS 541990Small Business (total)Due Nov 9, 2026FL

Quality Assurance Services - Civil Works, Interagency and International Services (IIS), and Military Construction Projects in Puerto Rico and U.S. Virgin Islands

DEPT OF DEFENSE · DEPT OF THE ARMY · Solicitation · posted Oct 14, 2026

NAICS 541990Small Business (total)Due Nov 13, 2026

U.S. Army Geospatial Center (AGC) Three-Dimensional High Speed-High Altitude Mapping Operations and Technology Integration (3DH2-M OTI) Single Award Task Order Contract (SATOC) Indefinite Delivery / Indefinite Quantity (ID/IQ) and Initial Task Order

DEPT OF DEFENSE · DEPT OF THE ARMY · Presolicitation · posted Oct 14, 2026

NAICS 541990Due Nov 13, 2026

TRAINING INSTRUCTOR OPERATOR SERVICES SUPPORT II

DEPT OF DEFENSE · DEPT OF THE ARMY · Combined Synopsis/Solicitation · posted Oct 9, 2026

NAICS 541990Small Business (total)Due Nov 9, 2026FL

FY2027 USPS OIG Broad Agency Announcement

POSTAL SERVICE · POSTAL SERVICE · Solicitation · posted Oct 5, 2026

NAICS 541990Due Oct 1, 2027

MARINE RESOURCE TECHNICAL SERVICES THROUGHOUT THE NAVAL FACILITIES ENGINEERING SYSTEMS COMMAND (NAVFAC) PACIFIC AREA OF RESPONSIBILITY

DEPT OF DEFENSE · DEPT OF THE NAVY · Presolicitation · posted Oct 5, 2026

NAICS 541990Small Business (partial)Due Dec 8, 2026JBPHH, HI

Multiple Award Schedule

GENERAL SERVICES ADMINISTRATION · FEDERAL ACQUISITION SERVICE · Combined Synopsis/Solicitation · posted Oct 2, 2026

NAICS 541990Due Oct 1, 2031

Multiple Award Schedule

GENERAL SERVICES ADMINISTRATION · FEDERAL ACQUISITION SERVICE · Combined Synopsis/Solicitation · posted Oct 2, 2026

NAICS 541990Due Oct 1, 2031

ACC-APG Industry Update November 2026: Registration and request for topics

DEPT OF DEFENSE · DEPT OF THE ARMY · Special Notice · posted Sep 24, 2026

NAICS 541990Due Dec 16, 2026

One Acquisition Solution for Integrated Services Plus (OASIS+) Total Small Business Set-Aside Continuously Open

GENERAL SERVICES ADMINISTRATION · FEDERAL ACQUISITION SERVICE · Solicitation · posted Jul 17, 2026

NAICS 541990Small Business (total)Due Jan 11, 2027

One Acquisition Solution for Integrated Services Plus (OASIS+) 8(a) Small Business Set-Aside Continuously Open Solicitation

GENERAL SERVICES ADMINISTRATION · FEDERAL ACQUISITION SERVICE · Solicitation · posted Jul 17, 2026

NAICS 5419908(a)Due Jan 11, 2027

One Acquisition Solution for Integrated Services Plus (OASIS+) Historically Underutilized Business Zone (HUBZone) Small Business Set-Aside Continuously Open Solicitation

GENERAL SERVICES ADMINISTRATION · FEDERAL ACQUISITION SERVICE · Solicitation · posted Jul 17, 2026

NAICS 541990HUBZoneDue Jan 11, 2027

One Acquisition Solution for Integrated Services Plus (OASIS+) Service-Disabled Veteran-Owned Small Business (SDVOSB) Set-Aside Continuously Open Solicitation

GENERAL SERVICES ADMINISTRATION · FEDERAL ACQUISITION SERVICE · Solicitation · posted Jul 17, 2026

NAICS 541990Service-Disabled Veteran-Owned (SDVOSB)Due Jan 11, 2027

One Acquisition Solution for Integrated Services Plus (OASIS+) Women-Owned Small Business (WOSB) Set-Aside Continuously Open Solicitation

GENERAL SERVICES ADMINISTRATION · FEDERAL ACQUISITION SERVICE · Solicitation · posted Jul 17, 2026

NAICS 541990Women-Owned Small Business (WOSB)Due Jan 11, 2027

One Acquisition Solution for Integrated Services Plus (OASIS+) Unrestricted Continuously Open Solicitation

GENERAL SERVICES ADMINISTRATION · FEDERAL ACQUISITION SERVICE · Solicitation · posted Jul 17, 2026

NAICS 541990Due Jan 11, 2027

One Acquisition Solution for Integrated Services Plus (OASIS+) Total Small Business Set-Aside Continuously Open

GENERAL SERVICES ADMINISTRATION · FEDERAL ACQUISITION SERVICE · Solicitation · posted Jul 15, 2026

NAICS 541990Small Business (total)Due Jan 11, 2027

One Acquisition Solution for Integrated Services Plus (OASIS+) 8(a) Small Business Set-Aside Continuously Open Solicitation

GENERAL SERVICES ADMINISTRATION · FEDERAL ACQUISITION SERVICE · Solicitation · posted Jul 15, 2026

NAICS 5419908(a)Due Jan 11, 2027

One Acquisition Solution for Integrated Services Plus (OASIS+) 8(a) Small Business Set-Aside Continuously Open Solicitation

GENERAL SERVICES ADMINISTRATION · FEDERAL ACQUISITION SERVICE · Solicitation · posted Jul 15, 2026

NAICS 5419908(a)Due Jan 11, 2027

One Acquisition Solution for Integrated Services Plus (OASIS+) Historically Underutilized Business Zone (HUBZone) Small Business Set-Aside Continuously Open Solicitation

GENERAL SERVICES ADMINISTRATION · FEDERAL ACQUISITION SERVICE · Solicitation · posted Jul 15, 2026

NAICS 541990HUBZoneDue Jan 11, 2027

One Acquisition Solution for Integrated Services Plus (OASIS+) Service-Disabled Veteran-Owned Small Business (SDVOSB) Set-Aside Continuously Open Solicitation

GENERAL SERVICES ADMINISTRATION · FEDERAL ACQUISITION SERVICE · Solicitation · posted Jul 15, 2026

NAICS 541990Service-Disabled Veteran-Owned (SDVOSB)Due Jan 11, 2027

One Acquisition Solution for Integrated Services Plus (OASIS+) Women-Owned Small Business (WOSB) Set-Aside Continuously Open Solicitation

GENERAL SERVICES ADMINISTRATION · FEDERAL ACQUISITION SERVICE · Solicitation · posted Jul 15, 2026

NAICS 541990Women-Owned Small Business (WOSB)Due Jan 11, 2027

One Acquisition Solution for Integrated Services Plus (OASIS+) Unrestricted Continuously Open Solicitation

GENERAL SERVICES ADMINISTRATION · FEDERAL ACQUISITION SERVICE · Solicitation · posted Jul 15, 2026

NAICS 541990Due Jan 11, 2027

One Acquisition Solution for Integrated Services Plus (OASIS+) 8(a) Small Business Set-Aside Continuously Open Solicitation

GENERAL SERVICES ADMINISTRATION · FEDERAL ACQUISITION SERVICE · Solicitation · posted Jul 14, 2026

NAICS 5419908(a)Due Jan 11, 2027

One Acquisition Solution for Integrated Services Plus (OASIS+) 8(a) Small Business Set-Aside Continuously Open Solicitation

GENERAL SERVICES ADMINISTRATION · FEDERAL ACQUISITION SERVICE · Solicitation · posted Jul 14, 2026

NAICS 5419908(a)Due Jan 11, 2027

One Acquisition Solution for Integrated Services Plus (OASIS+) Total Small Business Set-Aside Continuously Open

GENERAL SERVICES ADMINISTRATION · FEDERAL ACQUISITION SERVICE · Solicitation · posted Jul 13, 2026

NAICS 541990Small Business (total)Due Jan 11, 2027

One Acquisition Solution for Integrated Services Plus (OASIS+) 8(a) Small Business Set-Aside Continuously Open Solicitation

GENERAL SERVICES ADMINISTRATION · FEDERAL ACQUISITION SERVICE · Solicitation · posted Jul 13, 2026

NAICS 5419908(a)Due Jan 11, 2027

One Acquisition Solution for Integrated Services Plus (OASIS+) Historically Underutilized Business Zone (HUBZone) Small Business Set-Aside Continuously Open Solicitation

GENERAL SERVICES ADMINISTRATION · FEDERAL ACQUISITION SERVICE · Solicitation · posted Jul 13, 2026

NAICS 541990HUBZoneDue Jan 11, 2027

One Acquisition Solution for Integrated Services Plus (OASIS+) Service-Disabled Veteran-Owned Small Business (SDVOSB) Set-Aside Continuously Open Solicitation

GENERAL SERVICES ADMINISTRATION · FEDERAL ACQUISITION SERVICE · Solicitation · posted Jul 13, 2026

NAICS 541990Service-Disabled Veteran-Owned (SDVOSB)Due Jan 11, 2027

One Acquisition Solution for Integrated Services Plus (OASIS+) Women-Owned Small Business (WOSB) Set-Aside Continuously Open Solicitation

GENERAL SERVICES ADMINISTRATION · FEDERAL ACQUISITION SERVICE · Solicitation · posted Jul 13, 2026

NAICS 541990Women-Owned Small Business (WOSB)Due Jan 11, 2027

One Acquisition Solution for Integrated Services Plus (OASIS+) Unrestricted Continuously Open Solicitation

GENERAL SERVICES ADMINISTRATION · FEDERAL ACQUISITION SERVICE · Solicitation · posted Jul 13, 2026

NAICS 541990Due Jan 11, 2027

One Acquisition Solution for Integrated Services Plus (OASIS+) Total Small Business Set-Aside Continuously Open

GENERAL SERVICES ADMINISTRATION · FEDERAL ACQUISITION SERVICE · Solicitation · posted Jul 9, 2026

NAICS 541990Small Business (total)Due Jan 11, 2027

One Acquisition Solution for Integrated Services Plus (OASIS+) Unrestricted Continuously Open Solicitation

GENERAL SERVICES ADMINISTRATION · FEDERAL ACQUISITION SERVICE · Solicitation · posted Jul 9, 2026

NAICS 541990Due Jan 11, 2027

One Acquisition Solution for Integrated Services Plus (OASIS+) Total Small Business Set-Aside Continuously Open

GENERAL SERVICES ADMINISTRATION · FEDERAL ACQUISITION SERVICE · Solicitation · posted Jul 8, 2026

NAICS 541990Small Business (total)Due Jan 11, 2027

One Acquisition Solution for Integrated Services Plus (OASIS+) 8(a) Small Business Set-Aside Continuously Open Solicitation

GENERAL SERVICES ADMINISTRATION · FEDERAL ACQUISITION SERVICE · Solicitation · posted Jul 8, 2026

NAICS 5419908(a)Due Jan 11, 2027

One Acquisition Solution for Integrated Services Plus (OASIS+) 8(a) Small Business Set-Aside Continuously Open Solicitation

GENERAL SERVICES ADMINISTRATION · FEDERAL ACQUISITION SERVICE · Solicitation · posted Jul 8, 2026

NAICS 5419908(a)Due Jan 11, 2027

One Acquisition Solution for Integrated Services Plus (OASIS+) Historically Underutilized Business Zone (HUBZone) Small Business Set-Aside Continuously Open Solicitation

GENERAL SERVICES ADMINISTRATION · FEDERAL ACQUISITION SERVICE · Solicitation · posted Jul 8, 2026

NAICS 541990HUBZoneDue Jan 11, 2027

One Acquisition Solution for Integrated Services Plus (OASIS+) Historically Underutilized Business Zone (HUBZone) Small Business Set-Aside Continuously Open Solicitation

GENERAL SERVICES ADMINISTRATION · FEDERAL ACQUISITION SERVICE · Solicitation · posted Jul 8, 2026

NAICS 541990HUBZoneDue Jan 11, 2027

One Acquisition Solution for Integrated Services Plus (OASIS+) Service-Disabled Veteran-Owned Small Business (SDVOSB) Set-Aside Continuously Open Solicitation

GENERAL SERVICES ADMINISTRATION · FEDERAL ACQUISITION SERVICE · Solicitation · posted Jul 8, 2026

NAICS 541990Service-Disabled Veteran-Owned (SDVOSB)Due Jan 11, 2027

One Acquisition Solution for Integrated Services Plus (OASIS+) Women-Owned Small Business (WOSB) Set-Aside Continuously Open Solicitation

GENERAL SERVICES ADMINISTRATION · FEDERAL ACQUISITION SERVICE · Solicitation · posted Jul 8, 2026

NAICS 541990Women-Owned Small Business (WOSB)Due Jan 11, 2027

One Acquisition Solution for Integrated Services Plus (OASIS+) Unrestricted Continuously Open Solicitation

GENERAL SERVICES ADMINISTRATION · FEDERAL ACQUISITION SERVICE · Solicitation · posted Jul 8, 2026

NAICS 541990Due Jan 11, 2027

One Acquisition Solution for Integrated Services Plus (OASIS+) Total Small Business Set-Aside Continuously Open

GENERAL SERVICES ADMINISTRATION · FEDERAL ACQUISITION SERVICE · Solicitation · posted Jul 7, 2026

NAICS 541990Small Business (total)Due Jan 11, 2027

One Acquisition Solution for Integrated Services Plus (OASIS+) Total Small Business Set-Aside Continuously Open

GENERAL SERVICES ADMINISTRATION · FEDERAL ACQUISITION SERVICE · Solicitation · posted Jul 7, 2026

NAICS 541990Small Business (total)Due Jan 11, 2027

One Acquisition Solution for Integrated Services Plus (OASIS+) 8(a) Small Business Set-Aside Continuously Open Solicitation

GENERAL SERVICES ADMINISTRATION · FEDERAL ACQUISITION SERVICE · Solicitation · posted Jul 7, 2026

NAICS 5419908(a)Due Jan 11, 2027

One Acquisition Solution for Integrated Services Plus (OASIS+) Historically Underutilized Business Zone (HUBZone) Small Business Set-Aside Continuously Open Solicitation

GENERAL SERVICES ADMINISTRATION · FEDERAL ACQUISITION SERVICE · Solicitation · posted Jul 7, 2026

NAICS 541990HUBZoneDue Jan 11, 2027

One Acquisition Solution for Integrated Services Plus (OASIS+) Service-Disabled Veteran-Owned Small Business (SDVOSB) Set-Aside Continuously Open Solicitation

GENERAL SERVICES ADMINISTRATION · FEDERAL ACQUISITION SERVICE · Solicitation · posted Jul 7, 2026

NAICS 541990Service-Disabled Veteran-Owned (SDVOSB)Due Jan 11, 2027

One Acquisition Solution for Integrated Services Plus (OASIS+) Women-Owned Small Business (WOSB) Set-Aside Continuously Open Solicitation

GENERAL SERVICES ADMINISTRATION · FEDERAL ACQUISITION SERVICE · Solicitation · posted Jul 7, 2026

NAICS 541990Women-Owned Small Business (WOSB)Due Jan 11, 2027

One Acquisition Solution for Integrated Services Plus (OASIS+) Unrestricted Continuously Open Solicitation

GENERAL SERVICES ADMINISTRATION · FEDERAL ACQUISITION SERVICE · Solicitation · posted Jul 7, 2026

NAICS 541990Due Jan 11, 2027

Multiple Award Schedule

GENERAL SERVICES ADMINISTRATION · FEDERAL ACQUISITION SERVICE · Combined Synopsis/Solicitation · posted Jun 4, 2026

NAICS 541990Due Jun 3, 2031

Multiple Award Schedule

GENERAL SERVICES ADMINISTRATION · FEDERAL ACQUISITION SERVICE · Combined Synopsis/Solicitation · posted Jun 4, 2026

NAICS 541990Due Jun 3, 2031

One Acquisition Solution for Integrated Services Plus (OASIS+) Total Small Business Set-Aside Continuously Open

GENERAL SERVICES ADMINISTRATION · FEDERAL ACQUISITION SERVICE · Solicitation · posted May 12, 2026

NAICS 541990Small Business (total)Due Jan 11, 2027

One Acquisition Solution for Integrated Services Plus (OASIS+) 8(a) Small Business Set-Aside Continuously Open Solicitation

GENERAL SERVICES ADMINISTRATION · FEDERAL ACQUISITION SERVICE · Solicitation · posted May 12, 2026

NAICS 5419908(a)Due Jan 11, 2027

One Acquisition Solution for Integrated Services Plus (OASIS+) Historically Underutilized Business Zone (HUBZone) Small Business Set-Aside Continuously Open Solicitation

GENERAL SERVICES ADMINISTRATION · FEDERAL ACQUISITION SERVICE · Solicitation · posted May 12, 2026

NAICS 541990HUBZoneDue Jan 11, 2027

One Acquisition Solution for Integrated Services Plus (OASIS+) Service-Disabled Veteran-Owned Small Business (SDVOSB) Set-Aside Continuously Open Solicitation

GENERAL SERVICES ADMINISTRATION · FEDERAL ACQUISITION SERVICE · Solicitation · posted May 12, 2026

NAICS 541990Service-Disabled Veteran-Owned (SDVOSB)Due Jan 11, 2027

One Acquisition Solution for Integrated Services Plus (OASIS+) Women-Owned Small Business (WOSB) Set-Aside Continuously Open Solicitation

GENERAL SERVICES ADMINISTRATION · FEDERAL ACQUISITION SERVICE · Solicitation · posted May 12, 2026

NAICS 541990Women-Owned Small Business (WOSB)Due Jan 11, 2027

One Acquisition Solution for Integrated Services Plus (OASIS+) 8(a) Small Business Set-Aside Continuously Open Solicitation

GENERAL SERVICES ADMINISTRATION · FEDERAL ACQUISITION SERVICE · Solicitation · posted Jan 20, 2026

NAICS 5419908(a)Due Jan 11, 2027

One Acquisition Solution for Integrated Services Plus (OASIS+) Historically Underutilized Business Zone (HUBZone) Small Business Set-Aside Continuously Open Solicitation

GENERAL SERVICES ADMINISTRATION · FEDERAL ACQUISITION SERVICE · Solicitation · posted Jan 20, 2026

NAICS 541990HUBZoneDue Jan 11, 2027

One Acquisition Solution for Integrated Services Plus (OASIS+) Service-Disabled Veteran-Owned Small Business (SDVOSB) Set-Aside Continuously Open Solicitation

GENERAL SERVICES ADMINISTRATION · FEDERAL ACQUISITION SERVICE · Solicitation · posted Jan 20, 2026

NAICS 541990Service-Disabled Veteran-Owned (SDVOSB)Due Jan 11, 2027

One Acquisition Solution for Integrated Services Plus (OASIS+) Women-Owned Small Business (WOSB) Set-Aside Continuously Open Solicitation

GENERAL SERVICES ADMINISTRATION · FEDERAL ACQUISITION SERVICE · Solicitation · posted Jan 20, 2026

NAICS 541990Women-Owned Small Business (WOSB)Due Jan 11, 2027

One Acquisition Solution for Integrated Services Plus (OASIS+) Unrestricted Continuously Open Solicitation

GENERAL SERVICES ADMINISTRATION · FEDERAL ACQUISITION SERVICE · Solicitation · posted Jan 20, 2026

NAICS 541990Due Jan 11, 2027

One Acquisition Solution for Integrated Services Plus (OASIS+) Total Small Business Set-Aside Continuously Open

GENERAL SERVICES ADMINISTRATION · FEDERAL ACQUISITION SERVICE · Solicitation · posted Jan 13, 2026

NAICS 541990Small Business (total)Due Jan 11, 2027

One Acquisition Solution for Integrated Services Plus (OASIS+) 8(a) Small Business Set-Aside Continuously Open Solicitation

GENERAL SERVICES ADMINISTRATION · FEDERAL ACQUISITION SERVICE · Solicitation · posted Jan 13, 2026

NAICS 5419908(a)Due Jan 11, 2027

One Acquisition Solution for Integrated Services Plus (OASIS+) Historically Underutilized Business Zone (HUBZone) Small Business Set-Aside Continuously Open Solicitation

GENERAL SERVICES ADMINISTRATION · FEDERAL ACQUISITION SERVICE · Solicitation · posted Jan 13, 2026

NAICS 541990HUBZoneDue Jan 11, 2027

One Acquisition Solution for Integrated Services Plus (OASIS+) Service-Disabled Veteran-Owned Small Business (SDVOSB) Set-Aside Continuously Open Solicitation

GENERAL SERVICES ADMINISTRATION · FEDERAL ACQUISITION SERVICE · Solicitation · posted Jan 13, 2026

NAICS 541990Service-Disabled Veteran-Owned (SDVOSB)Due Jan 11, 2027

Related NAICS codes (industry group 5419)

541930 Translation and Interpretation Services (11 open)
541940 Veterinary Services (6 open)
541910 Marketing Research and Public Opinion Polling (1 open)
541922 Commercial Photography (1 open)

How NAICS codes decide small business size: NAICS codes for small business · notice types explained · set-asides